Water purifier for steam boilers



G. 1. WOODHOUSE. WATER PURIFIER FOR STEAM BOILERS.

APPLICATION FILED APR. I9, I921.

. Patented 0015.24, 1922.

2 SHEETS-SHEET I.

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a, a I a n O (7 06M 0 WJA J G. J. WOODHOUSE. WATER PURIFIER FOR STEAM BOILERS.

APPLICATION FILED APR. I9. 192'- Patented Oct. 24, 1922,

2 SHEETS-SHEET 2.

Inventor; G. J Waad/zobms hetented Get. 2%, rear.

GEORGE J. \VOODI-EOUSE, OE OELVIEIN, IOVIA.

HATER PURIFIER FOR STEAM BQILER-S.

Application filed. April 19,

i a citizen of the United States of America,

and a resident of Qelwein, Fayette County, Iowa, have invented certain new and useful Improvements in WVater Purifiers for Steam Boilers, of which the following is a speci fication.

My invention relates to water-purifiers for steam-boilers, and the object of my improvement is to provide means for removing solid impurities from water while being preheated and prior to its delivery to a steam-boiler.

This object has been accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings, in which Fig.1 is a vertical longitudinal section of a furnace containing a tubular steam-boiler in elevation with. my improved water-purifying .device in circulatory communication therewith; Fig. 2 is a cross-section of said boiler and said device taken just anterior to the rear water-leg and the rear partition of the device; Fig. 3 is a cross-section of the forward part of the separating drum with the forward water-leg being shown mostly in elevation, and Fig. at is a cross-section of the settlingchamber of the device and of the mud-drum in communication therewith.

Similarnumerals of reference denote corresponding parts throughout the several views.

My improved water purifying device may be employed in connection with any desired type of steam-boiler, but for purposes of il lustration, :l have shown it in circulatory communication by means of fomvard and rear water-legs ll. and 13 with ports 10 and 12 respectively in the forward and rear parts of the bottom of a separatingwlrum 1 positioned thereabovelmigitudmally. The boiler 14. is of the Babcock and Wilcox inclined water tube type mounted within a furnace having the usual supporting piers and ballling wall. preferably in the form of an elongated horizontal closed cylinder having a cross partition near its forward end enclosing a narrow receiving-chamber 2 having an inletpipe 3 in communication with a regulated source of water-supply not shown.

The numeral 8 denotes another cross-partition positioned a distance forwardly of the rear end of said drum. This partition eX- tends from the bottom of said drum but The preheating-dr-uin .1v is 1921. Serial No. 462,521.

about half way upwardly into the drum. 'lhepartition thus divides off a settlingchamber 4- at the rear end of the drum which has in its bottom depending tubes 5 leading into a horizontally-disposed mud-drum 6 having a blow-oft cock 7.

Said forward partition and the forward head of the drum 1 are connected and supported by means of stay-bolts as shown, and

both of said partitions are orificed in line to receive the forward and rear ends respectively of a plurality of water-tubes 9 positioned in the lower part only of said drum and placing in communication said chambers 2 and 4..

The separating-drum 1 is enclosed within the upper part of said furnace 15, and subjected to the direct heat thereof in such a manner as to preheat its contents before de livery to the tubular boiler 14:.

Feed-water delivered through the pipe 3 into the chamber 2 passes thence through the water-tubes 9 and is delivered into the settling-chamber 4:. In its passage through said tubes 9, the feed-water is preheated to a temperature corresponding to the working pressure, which causes deposition within the tubes of such elements as carbonate and sulphate of lime or other substances which ordinarily form solid scale within a boiler. Looser or more friable impurities are carried into the settling-chamberd where the current is interrupted suh'ic-iently to permit of their precipitation under the action of gravity and to be deposited by way of the tube 5 into the mud-drum 6. The clarified water rising in the chamber 4: passes over the partition 8 into the drum 1. whence it is delivered downwardly with free circulation by means of said water-legs 13 and 11. p

The scale and other impurities of the feed water are, therefore, by the preheating and separating functions of said purifying-device kept entirely out of the steam-boiler, which obviates frequent cleaning or repairs thereof.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. Tu combination a boiler, a separatingdrum positioned thereabove having a closed chamber at one end and having a transversepartition spaced from the other end, the

tubes positioned in the lower part of said separating-drum with their forward ends in communication with said closedchamber and their rear ends traversing said partition,

and water-legs effecting communication becommunication with a source of water-supply, and water-legs efiecting communication between opposite ends of said boiler-tubes and opposite ends of the lowerpart of said separating-drum between said chambers.

23. In combination, a boiler, a preheating drum at a higher level having a partitioned settling-compartment at one end thereof and in communication therewith above said partition only, said boiler having communication at its opposite ends with adjacent opposite ends of thebottom oi? said drum, and a conduit traversing the contents of said drum, in communication with a source of water-supply atone end, andin communication with said settling-compartment at the other end of said drum.

Signed at Waterloo. of March, 1921. V

GEORGE J. VOODHOU SE.

Iowa, this 18th day 

